（2014年安徽省合肥市高三第三次教学质量检测）26. Some experts and educators agree that difficulties and hardships can ______the best in teenagers.【考点】考察动词短语辨析

Actually，information technology can_____the gap between the poor and the rich because all can get what they want at the same time．

—How much is too much for a schoolbag?—Experts say students should carry_______ more than 10 or 15 percent of their body weight.

Many kinds of animals and plants die _________ every year.

She ______ to Africa to study the animals there, though her family asked her not to.